LSystemGenerator

Python class for generating and drawing LSystems

Generation

To import module, call from LSystem import LSystem.

To create an LSystem object, call obj = LSystem().

To add a new rule, call obj.NewRule("F=FFXYFF").

The parser recognises letters A-F as draw forward letters, and G-L as move forward without drawing letters. All other letters have no effect on the drawing of the LSystem.

Use obj.NewRule("+=ANGLE") and obj.NewRule("-=ANGLE") to define left and right turns, where 'ANGLE' is the angle to turn.

Use obj.SetAxiom("F") to set the starting point for the LSystem.

To generate the LSystem, call obj.GenerateLSystem(recursions) where 'recursions' is the number of recursions to execute.

To generate the lines, call obj.GenerateLines(origin, angle, lineLength) where 'origin' is the start point of the drawing, 'angle' is the angle to start drawing at, and 'lineLength' is the length of each line segment.

Drawing

Call obj.PygameDraw(windowSize, color) to draw the lines using Pygame, on a window of size 'windowSize', with lines of colour 'color'. Use the arrow keys to move around, the 'Z' key to zoom out, and the 'X' key to zoom in.

Other methods

Call obj.GetLSystem() to print out the text version of the LSystem produced by obj.GenerateLSystem(recursions).

Call obj.GetLines() to print out the list of line coordinates produced by obj.GenerateLines(origin, angle, lineLength).